UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Adding Sweep Out To A Hameg 203-4

OldTechFan96 · 11th Sep 2019, 7:48 pm

I'm looking to add a sweep output to my Hameg oscilloscope so that it can be used with a wobbulator.

The max sweep output from the Hameg is 4.4V at 200ms/cm to 1.5V uv/cm. This is too little to drive the reactance valve of the wobbulator.

Chris55000 suggested a "Dual Op Amp Preamp DC Amplification Board NE5532" and a 741 op amp. This will be ordered soon.

I can feed it +12V and -12V from the scope's PSU. I'm not sure about L+R inputs and outputs. I know where the sweep signal comes from.

Has anybody done this before?

11th Sep 2019, 7:48 pm	#1
OldTechFan96 Octode Join Date: Jul 2017 Location: Newcastle Upon Tyne, Tyne & Wear, UK. Posts: 1,181	Adding Sweep Out To A Hameg 203-4 I'm looking to add a sweep output to my Hameg oscilloscope so that it can be used with a wobbulator. The max sweep output from the Hameg is 4.4V at 200ms/cm to 1.5V uv/cm. This is too little to drive the reactance valve of the wobbulator. Chris55000 suggested a "Dual Op Amp Preamp DC Amplification Board NE5532" and a 741 op amp. This will be ordered soon. I can feed it +12V and -12V from the scope's PSU. I'm not sure about L+R inputs and outputs. I know where the sweep signal comes from. Has anybody done this before?